Pneumatic tire.



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Patented Nov. 17, 1908v 2 SHEETS-SHEET 1.

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G. SGHEUNER. BNEUMATIG TIRE, APPLICATION FILED Jun-12, 1907.

Patented Nov. 17,1908. 2 SHEETS-SHEET '2.

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CHARLES SCHEUNER, OF CHICAGO, ILLINOIS.

PNEUMATIC TIRE.

Be it known that I, CHARLES Scnnunnn, a citizen of the United States,resident of Chicago, in the county of Cook and State of Illinois, havemade a certain new and useful Invention in Pneumatic Tires; and Ideclare the following to be a full, clear, and exact description of thesame, such as will enable tains to make and use the invention, referencebeing had to the accompanying drawings, and to letters or gures ofreference marked thereon, which form a part of this specification.

igure 1 is a side view ofthe tire, partly in section. Fig. 2 isan edgeView of the tire with the tread or cover strip in section. Fig. 3 is atransverse section of the' tire. Fig. 4c isa perspective detail view ofa portion of the tread strip. Fig. 5 is a similar view of a portion ofthe arn1or-strip. Fig. 6 is a similar view of a portion of the tireproper. Fig. 7 is a bottom plan view of a portion of the tread strip.

The invention relates to armored pneumatic tires, designed chiefly forautomobiles, and it consists in the novel construction and combinationsof parts as hereinafter set forth.

In the accompanying drawings, illustrating the invention, the letter a,designates the body of the tire, formed, usually, of rubber, j andhaving the interior air chamber 7).

An annular recess 0. is provided around l the peripheral or treadportion of the tire I Which is of thickened character, such recess avingvertical side walls 17. joined to the cylindrical wall of the. lire byan annular wall 0. at right angles to the walls ..\l I hn'onals in therecess 0. are provided angul lar lateral projections of square charactereumnling from and joined to the side walls (I. and cast in the rubber ofthe tire, such l projections being of about hall the height-l of suchside walls. Fitting in the bottom l p ate steel of about j of the recesso, is an annular metal formed usually of thin spring one thirty-secondof an 111011 in thickness,

cured together, this metal strip. having square notches at each s1de,which closely and having its ends riveted or otherwise sej engage thelateral projections f, aforesaid. IV hen this metal plate is inplacefitsform Specification of Letters Patent. Application filed June12, 1907.

To all whom it may concern: j l l Patented Nov. 17, 1908. Serial No.378,471.

is cylindrical. plate in the recess 0, is placed the annular tread stripit, formed usually of rubber, having a convex outer surface, as shownmerging into the convex superfices of the tire, lateral flanges h,fitting closely against the annular wall 0, of thebody of the tire, andan annular inward extending plug portion 2', fitting closely against themetal armor strip aforesaid. The tread or cover strip. is of greaterthickness than the side Walls of the tire, usually three or four timesas thick, although, this is not essential, and of suflicient width toprovide the full tread portion of the tire .upon which the vehicle willrest at all times. Such cover strip is provided at intervals intliebottom of the plug portion thereof, with lateral notches j, fitting overthe lateral projections f, and closely engag-' ing the same.

In practice, the armor etched tightly around the tire before havor treadstrip being expanded to rideover the side walls of the peripheralrecess, all parts will be closely joined to form a unitary whole. Anyslippage of the armor strip or the tread strip with relation to the tireor to each other is prevented by the engagement of the lateralprojections f.

The use of the invention prevents penetration of the walls of the airchamber of the tire by all sharp obstructions, such as gla s 01 tac sand even of a bullet fired from a gun, at the same time reducing theelasticity of the air cushion but little. Should the tread or coverstrip become worn, it can be easily removed, and a new one expanded toplace.

Having thus described my I claim and desire to secure cut is l. \uarmored invention, what by Letters Patpneumatic tire including a bodyhaving a thickened outer portion, provided with an annular recess, theside walls of said annular recess having inward extending projections,and an annular armor strip of metal fitting in said recess and havinglateral notches engaging said lateral projec tions, and an annularelastic tread strip fitting upon said armortrip in said recess andhaving lateral notches engaging said lateral projections.

Upon the metal strip or 2. A11 armored pneumatic tire including a treadstrip to prevent mutual slippage of the body having a thickened outerportion proparts with respect to each other. 10 vided with an annularrecess, an annular In testimony whereof I aflix my signature, armorstrip of metal fitting in said recess, an in presence of two witnesses.

annular elastic tread strip fitting upon said CHARLES SCHEUNER. armorstrip in said recess, said body being 'Witnesses: provided with positivelocking means having a O. MOPARLAND,

engagement with said armor strip and .said D. J. MCMAHON.

